I'd wait for a bit until the ecosystem stabilizes. Right now the development is rapid and a bit chaotic, which is good overall. but normies could take this kinda hard.
Clients and relays need some time to mature a little and then I'd go for a massive campaign push. In zhe meantime, as far as I am aware we are getting organic traction and grow a little every day.
Also if anything, as far as I can tell. the best time to advertise Nostr is after/during any fuckup by big tech SM.
For example rate limits were great in this regard. I suspect Twitter rebranding will be another one and Theeads is bound to fuck up in a major way soon enough too.